import * as fs from 'fs';
import * as path from 'path';

interface LakeRaw {
  id: string;
  text: string;
  priority?: boolean;
}

const lakesRaw: LakeRaw[] = [
  { id: "VLL1|1", text: "VD Lipno 1 - Vltava", priority: true },
  { id: "VLOR|1", text: "VD Orlík - Vltava", priority: true },
  { id: "VLSL|1", text: "VD Slapy - Vltava", priority: false },
  { id: "BLHU|1", text: "VD Husinec - Blanice (PI)" },
  { id: "BIBI|1", text: "VD Bílsko - Bílský potok" },
  { id: "KLDP|3", text: "VD Dolejší Padrťský rybník" },
  { id: "KLHP|3", text: "VD Hořejší Padrťský rybník" },
  { id: "KLKL|3", text: "VD Klabava - Klabava" },
  { id: "KCKC|3", "text": "VD Klíčava - Klíčava" },
  { id: "LILA|3", "text": "VD Láz - Litavka" },
  { id: "MARI|1", "text": "VD Římov - Malše" },
  { id: "MZHR|3", "text": "VD Hracholusky - Mže" },
  { id: "MZLU|3", "text": "VD Lučina - Mže" },
  { id: "MZSS|3", "text": "VD Plzeň-Štruncovy sady" },
  { id: "OPOB|3", "text": "VD Obecnice - Obecnický potok" },
  { id: "PPPI|3", "text": "VD Pilská - Pilský potok" },
  { id: "RACU|3", "text": "VD České Údolí - Radbuza" },
  { id: "SPNE|2", "text": "VD Němčice - Sedlický potok" },
  { id: "SVKR|1", "text": "VD Švihov - Želivka" },
  { id: "UHKA|1", "text": "VD Kamýk - Vltava" },
  { id: "VRSN|1", "text": "VD Vrané - Vltava" },
  { id: "ZLUT|3", "text": "VD Žlutice - Střela" },
  // Adding dummies to reach ~40
  ...Array.from({length: 18}).map((_, i) => ({ id: `DUMMY${i}`, text: `VD Dummy Lake ${i+1}` }))
];

const lakes = lakesRaw.map(lake => {
  const sparkline = Array.from({length: 12}).map(() => 50 + Math.random() * 20);
  return {
    id: lake.id,
    name: lake.text.replace('VD ', '').split('-')[0].trim(),
    river: lake.text.includes('-') ? lake.text.split('-')[1].trim() : '',
    priority: lake.priority || false,
    level: (200 + Math.random() * 500).toFixed(2),
    capacity: Math.floor(20 + Math.random() * 80), // 20% to 100%
    inflow: (Math.random() * 20).toFixed(1),
    outflow: (Math.random() * 20).toFixed(1),
    volume: (Math.random() * 300).toFixed(1),
    sparkline
  };
});

const outputPath = path.resolve(process.cwd(), 'public/data/lakes_index.json');
fs.writeFileSync(outputPath, JSON.stringify(lakes, null, 2));
console.log('Mock lakes generated:', lakes.length);